baber/WOPTO huggingface dataset:
Patent GB-693061-A (GB)
Title: Electrical translating devices utilizing semiconductive bodies
IPC: H03K17/60
Filed: 1951-02-09
Abstract: 693,061. Semi-conductor devices. WESTERN ELECTRIC CO., Inc. Feb. 9, 1951 [Feb. 18, 1950], No. 3201/51. Drawings to Specification. Class 37. [Also in Group XL (c)] An electric signal translating device comprises a semi-conductor body having a low resistance connection and a rectifying connection which is used to inject charge carriers of the sign opposite to those normally present in the semi-conductor, and means including reverse direction pulses to periodically remove the injected charges which are utilized in a load circuit. If the collector electrode of a transistor comprising emitter, collector and base electrodes is supplied with a square voltage pulse of one microsecond duration in the reverse sense (i.e. negative pulses if the semiconductor is of N-type material), the collector current is shown to be dependent on the immediately prior conditions existing in the emitter circuit. If no emitter current has been flowing, the collector current reaches a small value for the duration of the pulse, but if an emitter current of say one m.a. has been flowing providing a supply of current carriers in the semi-conductor, the collector current rises to a high value at the commencement of the pulse and then decays during the pulse towards the steady state level determined by the emitter and collector voltages concerned. Similar characteristics may be obtained by using only one electrode which is used alternative as emitter and collector. The application of the device to a pulse code modulation system, and to a pulse position modulation system is described.
Patent GB-240705-A (GB)
Title: Improvements in or relating to walls & roofs
IPC: E04F13/04
Filed: 1925-02-04
Abstract: 240,705. Boot, C. Feb. 4, 1925. Walls; roofs.-These, consist, of a bituminous fabric 4 secured to a timber framework 1 and having applied to its surface a cementitious layer 7 which is provided with a reinforcement 5 of wire netting or expanded metal attached by chairs 6 to the framework 1 in such manner as to be disposed at a distance from the fabric 4. The fabric 4, which may be of two-ply tarred felt, is applied against light wires 2 attached to the framework. The inner part of the wall consists of wood panelling 9 secured to the timber framework 1. The. concrete may be applied by a cement gun. The chairs 6 may be in the form of spikes having notches adapted to engage the reinforcement. The reinforcement is so fixed that the concrete mav bulge slightly in order to allow for expansion and contraction.
Patent GB-107551-A (GB)
Title: Liquid Speedometer.
Inventor: ALEXANDER WILLIAM
IPC: G01P3/28
Filed: 1917-03-05
Abstract: 107,551. Alexander, W. March 5, 1917. Fluid speed indicators.-A centrifugal pump W forces liquid beneath a spring-loaded piston D moving in a cylinder E which is immersed in liquid contained in a reservoir G. Liquid displaced on the upward movement of the piston passes to the pump chamber by passages F. Motion of the piston is communicated to the indicating hand L by a rack and pinion, or multiplying levers.
Patent GB-1282622-A (GB)
Title: Lamp failure warning device and system for lights of road vehicles or the like
Inventor: WORMLEIGHTON GRAHAM RAWLAND
IPC: B60Q11/00
Filed: 1969-01-21
Abstract: 1282622 Electromagnetic relays PRESSAC Ltd 20 Jan 1970 3259/69 Heading H1N [Also in Division G4] In a lamp failure alarm, the lighting load is divided into two halves 1, 2, the current through each half being passed through respective windings 4, 5 of a differential relay, an adjustable magnet 8 being provided so that the contacts 6 of a reed switch are in their normal state when all the lamps are operative. The fields of windings 4, 5 become unbalanced in the event of failure of one lamp, so that reed contacts 6 become closed, operating indicator lamp 7. A holding winding 18 may be included so that a further failure of a lamp of the other group does not restore the balance. Relay construction.-Fig. 2 shows a pair of reed contacts interposed between two windings of a differential relay which includes a bar magnet 8 mounted in a rotatable cover 9 which is a snap-fit on body 10. A switch 19 (Fig. 1) in the holding circuit is opened during the adjustment of magnet 8 so that the relay contacts remain open despite slight unbalance in the current in the two differential windings. The cover 9 may have a calibrated scale (Fig. 3, not shown).
Patent GB-1421033-A (GB)
Title: Safety plug for electrical socket outlets
IPC: H01R13/447
Filed: 1973-01-22
Abstract: 1421033 Two-part couplings A PERDIOS 22 Jan 1973 [2 Feb 1972] 3268/73 Heading H2E A dummy plug, composed of an insulating body 11, pin-like members 12, and an inner insert member 22, serves as a safety cover for an electrical socket outlet when the socket is not in use, and has an extensible handle 13 which can be retained in a safety position, Fig. 4, providing no finger grip and thus rendering difficult its withdrawal, and which can also be extended into a release position, Fig. 7, by rotation of member 13. Marker ribs 36, 37 on the conical surfaces indicate the relative orientation, and these markers become aligned when the release position is reached. Member 13 has an offset key 18 which lodges in an annular groove 27 of insert 22, but which can pass along keyway slot 28 in the release orientation. The boss of inset 22 blocks a second keyway 29 through which key 18 is entered during initial installation. Reference has been directed by the Comptroller to Specification 935,829.
Patent GB-847512-A (GB)
Title: Improvements relating to fastenings
Inventor: FERNBERG ERIC BIRGER
IPC: F16B5/12
Filed: 1957-01-30
Abstract: 847,512. Mouldings; fixing fabric sheets. F. T. PRODUCTS Ltd. Jan. 14,1958 [Jan. 30, 1957], No. 3285/57. Class 20(4) [Also in Group XXV] A sheet of fabric 34 is secured to a rigid apertured panel 19 by means of a plurality of fasteners 10 and a multi-part beading two parts 23, 24 of which can be frictionally engaged together the fabric being frictionally engaged between the parts of the beading. As shown the part 24 of the beading is of C-shape in cross-section and clips over the part 23 the edge of the piece of fabric being between the two parts and the fabric being subsequently folded back over the part 24. The fasteners 10 are of the shape shown in Fig. 1 comprising a stud portion with a closed nose 11 and outwardly turned at knees 14, 15 a waist 16 and a pair of outwardly directed feet 17 and 18. The feet 17 and 18 lie in a groove between ribs 27 and 28 of the part 23 of the beading with the waist of the fastener passing through a hole 32 in the beading so that the nose can pass through the aperture in the panel with the knees 14 and 15 engaging the underside of the panel. In a modification intended for fastening two pieces of fabric to the panel so that an almost unnoticeable joint between the two pieces is produced the part of the beading which is fixed to the panel has two male portions and two C-shaped parts are used, one for each piece of fabric and each engages one of the male portions. The fasteners are slightly modified and pass through a hole in the beading part situated between the two male portions.
Patent GB-1133112-A (GB)
Title: Method of printing on glass surfaces
IPC: C09D125/14
Filed: 1966-01-25
Abstract: 1,133,112. Printing processes. ARMSTRONG CORK CO. 25 Jan., 1966 [25 Jan., 1965], No. 3299/66. Heading B6C. [Also in Division C3] A process for printing on glass surfaces comprises applying to the surface a coating having a thickness within the range 5-100 millimicrons of a refractory metal oxide, applying to the coated surface a printing ink containing, as binder, a terpolymer comprising 50-70% by weight of styrene, 20-48% by weight of 2-ethylhexyl acrylate and 2-14% by weight of acrylic or methacrylic acid, and an organic epoxide curing agent for the terpolymer, and heating the printed surface to cure the terpolymer, e.g. at 120-230‹ C. The printing ink may comprise a pigment, an organic epoxide curing agent (and, if desired, an amine such as dimethylamine, butylamine, dimethylaminophenol, benzyl-dimethylamine, or 2,4,6-tris- (dimethyl-amino-methyl)-phenol) dissolved or dispersed in a solution or dispersion of a terpolymer as set out above. Solvents for the terpolymer are aromatic hydrocarbons, alcohols, ketones, dimethyl-formamide and diethylene glycol monoethylether monoacetate, alternatively -the terpolymer may be dispersed in water. The metal oxide coating may be applied by coating the hot glass surface with liquid pyrolysable metallic compound and further heating the glass surface to pyrolyse the compound. The metallic compound may be an organo-metallic compound of aluminium, titanium or zirconium. Compounds specified are aluminium ethoxide, aluminium isopropoxide, tetraisopropyl titanate and tetra-t-butyl zirconate. Alternatively the metallic compound may be a metal polyhalide such as tin tetrachloride, antimony pentachloride, germanium tetrachloride or vanadium tetrachloride. The organic epoxide may be limonene dioxide, dicyclopentadiene dioxide or a diglycidyl ether of a bisphenol, and may be used in an amount of 5-25% by weight of the terpolymer and such that the ink contains 0À2-1À5 equivalents of epoxide per carboxylic acid equivalent in the terpolymer. The pigment may be titanium dioxide present in an amount of 15-30% by volume or may be chrome yellow, benzidene yellow, phthalocyanine blue or an azo pigment dye (naphthanil).
Patent GB-126732-A (GB)
Title: Improvements in Fastening Devices for Covers and the like.
Inventor: ROE ALLIOTT VERDON
IPC: B64D29/08
Filed: 1917-03-07
Abstract: 126,732. Roe, A. V. March 7, 1917. Addition to 17739/15. Hook fastenings.-The fastening-device described in the parent Specification is modified by having the clasp member formed as a dome, Fig. 2, or as a flat plate, Fig. 4, adapted to cover the holding-screw C and most of the hole in the plate A. An internal lip G or catch N engages behind the screw-head, and finger-nail grooves O, P may be provided.
Patent GB-844995-A (GB)
Title: Improvements relating to air-compressing fuel-injection internal combustion engines
IPC: F02B3/00
Filed: 1959-01-30
Abstract: 844,995. Admission passages; fuel-injection engines. DAIMLER-BENZ A. G. Jan. 30, 1959 [Feb. 11, 1958], No. 3420/59. Classes 7(2) and 7(3). In an engine having direct injection from a valved nozzle 19 into a piston combustion chamber 22, a passage leading to an air intake valve 5 comprises a horizontal portion 7, forming a valve chamber 11 winding spirally about the valve guide, and a down portion 13 angled towards the cylinder axis so as to direct thereto air whirled by the chamber 11. Two overhead exhaust valves 15 and an incandescent igniter 20 are provided.
Patent GB-750955-A (GB)
Title: Improvements in or relating to circuit arrangements for frequency-modulated waves
IPC: H03C3/06
Filed: 1954-02-05
Abstract: 750,955. Frequency modulation; radio signalling. SIEMENS & HALSKE AKT.- GES. Feb. 5, 1954 [Feb. 5, 1953], No. 3511/54. Class 40 (5). Negative feedback without demodulating an F.M. wave and without instability arising is applied to an F.M. wave of mean frequency f1 and frequency deviation F1 by a retroactive loop to a frequency changer. The loop also reduces the frequency deviation, and comprises a mixer M1 with intermediate frequency output f2, amplifier V, a network N<SP>1</SP> comprising two parallel connected paths one of them introducing a delay time t 0 , a limiter B, frequency multiplier N, filter S, and second mixer M2 producing the output frequency f1-f2 also applied to the first mixer M1. If Á,# are the transfer factors of the amplifier V and feedback loop. for the frequency deviation it is shown that where n is the frequency multiplying factor, w the angular frequency of the modulation, t 1  the delay time of the amplifier V and t 2 =¢ t 0 . K The value of t 0  is preferably chosen as to= -- fo where K is an integer and f o  is the mean frequency of the frequency modulated wave. At initial high modulation frequencies, e.g. defined by w(t 1 +t 2 )=# liable to produce instability the value of Á# can therefore be arranged to have such a decreased value as to prevent this. The frequency deviation at the output of the mixer M2 being F1Á#/1+Á# decreases with modulation frequency, and the zeros of the frequency deviation may be arranged on the edge of the pass-band of the I.F. amplifier where the phase shift is the maximum. For the amplifier V, 1Á1=1, due to the frequency deviation being unchanged, but the phase is altered. The frequency deviation F1Á/1+Á# may be restored to the original value F1 by amplifying the output of M2 by a further amplifier V<SP>1</SP> similar to V, and taking the difference of its frequency deviation output FlÁ<SP>2</SP>/1+Á# with the output of V in a third mixer M3. As applied to a relay station a fourth mixer M4 may add a frequency difference #f to the retransmitted carrier frequency.
Patent GB-524636-A (GB)
Title: Improvements in electric lamps and fittings
IPC: F21V17/00
Filed: 1939-02-02
Abstract: 524,636. Electric lamp fittings. CURTIS, A. H. Feb. 2, 1939, No. 3515. [Classes 75 (ii) and 75 (iv)] An electric lamp fitting comprises a tubular transparent or translucent shade of elliptical cross-section clamped between gasket provided end fittings rendering the lamp water and vapour proof. The gaskets may be plain or channelled and held in annular grooves 11 of the end fittings 7. One side portion of the shade may be provided or backed with a reflecting surface or with a reflecting guard mounted on bracing rods 8 passing through lugs 10 on the end fittings 7. To vary the direction of the light emitted the shade may be rotatably mounted about pivots 16 on end cap junction boxes 13 housing the lampbulb sockets and connected by tubes 18 and further junction boxes (not shown) to a horizontal tubular support housing the electric leads from the mains. Cooling air for the shade may be supplied through the said tubes.
Patent GB-455753-A (GB)
Title: Improvements relating to liquid dispensing apparatus
IPC: B67D7/52
Filed: 1936-02-06
Abstract: 455,753. Dispensing liquid fuel &c. GILBERT & BARKER MANUFACTURING CO., Cold Springs Avenue, West Springfield, Massachusetts, U.S.A. Feb. 6, 1936, No. 3609. Convention date, Feb. 26, 1935. [Class 116] [See also Group XXIX] Apparatus for dispensing measured quantities of petrol &c., comprises a motor-driven pump 10 which delivers the liquid from a bulk supply to an air and vapour separator comprising a chamber 38 bounded on one side by a partition 39 over the top of which the liquid passes into a second compartment 37 containing a gauze cylinder 42, the liquid flowing through the walls of this cylinder into a flow meter 16 and thence passing to a delivery hose 19 by way of an expansion chamber 52 and sight glass 18. The expansion chamber and the hose nozzle are designed to maintain the liquid in the hose, in the interval between delivery operations, at approximately a constant pressure which is greater than atmospheric and less than the pressure of supply, the construction being such as to prevent either the withdrawal of unmeasured quantities of liquid from the hose, or the occurrence of errors in the quantity delivered owing to hose dilatation. The flow meter is of the displacement type having pistons 31 which drive the indicating mechanism by the engagement of a pin 34 on the crank 33 with a lever 35 fast on the spindle 36 coupled to the indicating mechanism. Return of liquid to the flow meter from the hose as the result of hose dilatation accordingly does not actuate the indicating mechanism, but creates lost motion between the pin 34 and the lever 35 which has to be taken up on the next delivery operation before any delivery is recorded. The nozzle has a valve 21, Fig. 4, controlled by a lever 23 operated by the attendant, and a spring-pressed non-return valve 24 which is so loaded as to open at a given pressure greater than atmospheric but less than the pressure of supply. The expansion chamber comprises a cylinder 53 in which works a piston 67 carried by a closedended tube 60 guided in a boss 59 of a detachable cover 56, the piston being subjected to the differential action of opposed springs 63, 66. During delivery, liquid flows through the delivery pipe 17, displaces the piston 67 and passes through the sight glass 18 to the hose. When the pump stops, the piston 67 descends and isolates the liquid in the hose, the pressure in the hose being limited by the setting of the valve 24. Expansion of the liquid in the hose, e.g. as the result of hot weather, is accommodated without substantial increase of pressure by movement of the piston 67, and if this movement is excessive, a byepass 74 in the cylinder wall is opened thus draining excess liquid from the hose. Specification 430,192 is referred to.
Patent GB-535459-A (GB)
Title: Fireproof safety curtain
IPC: E06B5/16
Filed: 1940-02-28
Abstract: 535,459. Fireproof curtains. JOHNSON & SONS, Ltd., C. H., and PARRETT, H. H. Feb. 28, 1940, No. 3658. [Class 47 (ii)] [Also in Group I] A fire-proof or fireresisting curtain is made from thin flexible strips a, b or ribbon of metal or alloy of good heatconductivity closely woven together, the ends of the strips being bent over and flattened to produce selvedges. The curtain may be mounted to roll up, or to be drawn up, in which latter case it may be reinforced by the introduction at intervals of strengthening wires.
Patent GB-558134-A (GB)
Title: Improvements in or relating to rope strands and cable laid ropes
IPC: D07B1/02
Filed: 1942-03-20
Abstract: 558,134. Ropes. STEVENS, A. H. (Whitlock Cordage Co.). March 20, 1942, No. 3739. [Class 109] A rope strand B to be used as a single unit or laid or twisted together with corresponding strands to form a rope comprises a number of members A twisted together in helices of substantially equal diameter. Each member A in turn comprises elements 10 twisted in helices of substantially equal diameter, so that all of the elements 10 in a given length of strand are of substantially equal length. A cover C may be applied to the strand, the pitch of cover elements being such that the length of the cover elements in a given length of strand bears a predetermined relation to the length of the elements 10. The elements 10 may consist of yarns, slivers groups of yarns or filaments.
Patent GB-694157-A (GB)
Title: Improvements in three-phase commutator motors with speed regulation by brush displacement
IPC: H02K23/18
Filed: 1952-02-13
Abstract: 694,157. Brush gear for dynamo-electric machines. ALLMANNA SVENSKA ELEK. TRISKA AKTIEBOLAGET. Feb. 13, 1952 [Feb. 13, 1951], No. 3778/52. Class 35. The speed of a 3-phase commutator motor is controlled by brush displacement in which the brushes are moved circumferentially by a pilot motor through gearing comprising inter-meshing spiral toothed wheels, the radii of which changes in such a manner that their sum is always constant along the line through their centres. In this way the brush rings move in opposite direction with variable speed owing to the two spiral gear-wheels having a continuously changing ratio. A pilot motor 1 drives a shaft 5 through gear-wheels 2, 3, 4. A spiral formed gear-wheel 6 on the shaft 5 meshes with another spiral gear-wheel 7 on a shaft 8. A toothed ring 10 carrying brush arms 11 is rotated by a pinion 9 on the shaft 8. The ring 10 rotates a shaft 15 through a pinion 14 and a shaft 17 is in turn rotated by the shaft 15 through gears 18, 19. A pinion 16 on the shaft 17 rotates a toothed ring 13 carrying brush arms 12. The two rotating brush arm sets 11, 12 enable the commutator motor to take a practical constant current at all speeds.
Patent GB-556428-A (GB)
Title: Improvements in and relating to electric glow switches
IPC: H05B41/08
Filed: 1942-03-21
Abstract: 556,428. Thermal switches. BRITISH THOMSON-HOUSTON CO., Ltd. March 24, 1942, No. 3875. Convention date, March 26, 1941. [Class 38 (v)] In a glow switch, a conducting path 10 between the electrodes 3, 4. is provided, of lower resistance than that including the electrodes 6, 7 through the unionized gas in the envelope, but higher than that including the electrodes when the gas, has been ionized. In the example which shows a bimetallic strip 8 with contact 9 for shorting the electrodes after heating by the glow discharge between them, a layer of metal 10, e.g. of aluminium or nickel is coated on the pinch 2 and is made to form a narrow gap across it, as by passing a high current, to raise the resistance appropriately. Specification 541,925 is referred. to.
Patent GB-233445-A (GB)
Title: Improvements in and relating to razors and razor blades
IPC: B26B21/18
Filed: 1924-02-14
Abstract: 233,445. Myatt, W. J. Feb. 14, 1924. Razors, safety. The blade-.holder of a safety razor is provided with means movable thereon to direct and determine which side of the detachable blade shall be presented to the face when shaving. As shown, the detachable blade 1 is held in the holder 5 by pins 2 which allow it to be reversed and the holder carries pins 3, 4 which are arranged so that when the pin 3 is advanced to project through the plane of the blade 1, which is provided with an additional hole for this purpose, the other pin 4 is retracted below such plane and to place the blade in the holder with its face reversed in relation thereto it is necessary to move the pins so that the pin 3 is retracted and the pin 4 projects to engage the hole in the blade. The pins may be carried by a stirrup 7 and moved by a cam surface 6 on a sleeve 8 rotatably mounted on the handle; the sleeve may have slots or openings 10 which at the two positions of the pins 3, 4, expose indications of alternate days of the week so that the user on any day can determine the correct position of the blade for that day. To give an additional indication of the side of the blade to be used the alternate names of the days, of the week may be marked on opposite sides of the blade.
Patent GB-470021-A (GB)
Title: Manufacture of 3-hydroxy-diphenylene oxide and substitution products thereof
Filed: 1936-02-08
Abstract: 3-Hydroxydiphenylene oxide and substitution products thereof are made by treating a compound of the formula <FORM:0470021/IV/1> where R is a phenyl radical which contains an o-halogen atom and may contain other substituents with an alkaline agent, for example, by melting with a caustic alkali or by heating with an alkali hydroxide or carbonate solution, the use of pressure being referred to in the Provisional Specification.  The products are dyestuff intermediates. In examples, the following substances are treated with alkali: (1) 2<1>-chloro-2.5-dihydroxydiphenyl; (2) 4<1>-methyl-2<1>-chloro-2.5-dihydroxydiphenyl; (3) 2<1>.4<1>- or 2<1>.3<1>- or 2<1>.6<1>-dichloro-2.5-dihydroxydiphenyl (the 4<1>- or 3<1>- or 6<1>-chorine may be exchanged for a hydroxy group according to conditions); (4) 4<1> - methoxy - 2<1> - chloro -2.5-dihydroxy - diphenyl; (5) 2<1>.5<1> - dichloro - 2.5 - dihydroxydiphenyl; (6) 2<1>-chloro-5<1>-methyl-2.5 - dihydroxydiphenyl; (7) 5<1> - methoxy - 2<1>-chloro - 2.5 - dihydroxydiphenyl; and (8) 4<1>-amino - 2<1> - chloro - 2.5 - dihydroxydiphenyl (obtained by reduction of 4<1>-nitro-2<1>-chlorphenylbenzoquinone), the product being acetylated to 7-acetamino-3-hydroxydiphenylene oxide.  The phenylhydroquinones used as starting materials are obtained by coupling a diazotized o-halogen aniline with benzoquinone with elimination of nitrogen as in German Specification 508,395, and reducing the product.  British Specification 427,816 is referred to.
Patent GB-395633-A (GB)
Title: An improved method of protecting magnesium and its alloys at elevated temperatures
IPC: C22B26/22
Filed: 1933-02-08
Abstract: Magnesium and its alloys in a molten or heated condition, for example in a melting-pot or crucible or during casting or heat-treatment, are protected from combination with atmospheric or other gases in contact therewith by means of a mixture of carbon bisulphide vapour and one or more gases such as nitrogen, carbon monoxide, carbon dioxide, and sulphur dioxide.  The mixture may contain 1-10 per cent of carbon bisulphide.